CN113722892B - Three-dimensional digital expression method for overhead line component based on IFC data format - Google Patents
Three-dimensional digital expression method for overhead line component based on IFC data format Download PDFInfo
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- 229910000831 Steel Inorganic materials 0.000 claims description 88
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Abstract
The invention relates to an overhead line component three-dimensional digital expression method based on an IFC data format, which comprises the following steps: step 1: establishing a connection relationship between overhead line components based on an IFC data format according to the requirements of overhead line parameterization design; step 2: according to the connection relation between overhead line components, three-dimensional parametric modeling is carried out through overhead line rapid building software, and an overhead line is built; step 3: and after the whole construction, calculating and modifying local details to finish the three-dimensional digital expression of the overhead line component. Compared with the prior art, the method has the advantages of accurately expressing the design of the overhead line, quickly visualizing the design result, providing a data base for subsequent electrical calculation and analysis, and the like.
Description
Technical Field
The invention relates to the field of overhead line design, in particular to an overhead line component three-dimensional digital expression method based on an IFC data format.
Background
At present, the design of the overhead line for power grid engineering is still mainly designed in two dimensions, a pole tower, an insulator string, hardware fittings and the like in the overhead line express the appearance and the size in a drawing mode, and then the connection relation among the components is expressed in a detail table mode, so that the expression mode is simple and convenient, important design parameters can be clearly presented through a schematic diagram, but because the drawing cannot be linked, no reference is formed among the components, more time is consumed based on the analysis of the position relation among the components, such as calculation of a clearance circle, wind deflection of a wire and the like, and more labor and time cost are consumed when the design is changed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an overhead line component three-dimensional digital expression method based on an IFC data format.
The aim of the invention can be achieved by the following technical scheme:
an overhead line component three-dimensional digital expression method based on an IFC data format comprises the following steps:
Step 1: establishing a connection relationship between overhead line components based on an IFC data format according to the requirements of overhead line parameterization design;
step 2: according to the connection relation between overhead line components, three-dimensional parametric modeling is carried out through overhead line rapid building software, and an overhead line is built;
Step 3: and after the whole construction, calculating and modifying local details to finish the three-dimensional digital expression of the overhead line component.
In the step1, the process of establishing the connection relationship between the components specifically includes:
Step 101: introducing a tower locating point for locating the tower in the tower arrangement design;
step 102: generating a single tower line according to the position and the orientation of a tower locating point;
step 103: and generating an overhead line component according to the single line of the pole tower.
In step 101, the information of the locating points of the towers includes the position information of the towers and the sequential connection sequence information between the towers, the position information includes coordinates, orientation, elevation and burial depth, and the sequential connection sequence information includes line codes and numbers.
The overhead line component comprises a steel pipe pole, an iron tower, hardware fittings, insulators and overhead line groups, and has the attribute of line code numbers and numbers of corresponding pole tower single lines so as to facilitate inquiry and sequencing.
The steel pipe pole constitute by steel pipe pole single line group, pole body, cross arm, flange and appurtenance, steel pipe pole single line group be a set of line that has different line types and combination relation, represent the position of pole body, cross arm and flange, appurtenance pass through steel pipe pole single line group and be connected with the steel pipe pole, the steel pipe pole pass through the multilayer combination relation between cross arm, link plate and the link hole and be connected with the insulator.
The iron tower comprises an iron tower single-wire group, a rod piece, a wire hanging plate and accessory components, wherein the iron tower single-wire group is a group of wires which represent the rod piece position and have different wire types, the wire hanging plate and the accessory components of the iron tower are connected with the iron tower through the iron tower single-wire group, and the wire hanging plate is provided with a wire hanging hole and is connected with an insulator.
The insulator be equipped with suspension point and string hanging point, suspension point and the string hanging point on the shaft tower correspond to be connected, the gold utensil place with reference to different components according to its mounted position and function.
The overhead line group consists of a positioning line and an overhead line, two ends of the positioning line are provided with hanging line points which are correspondingly connected with the hanging line points of the insulator, the positioning line is calculated according to the position of the hanging line points through a catenary formula, and the overhead line is obtained according to the position and attribute information of the positioning line.
In the step 2, the overhead line rapid construction software comprises a standard design module, a channel path module, a steel pipe pole module, an iron tower module and a wire guide module.
In the step 2, the fast construction process of the overhead line specifically comprises the following steps:
Step 201: loading a required template group, carrying out uniqueness test on a current project file to determine whether the current project file contains an established ISP group, if the current project file does not have the established ISP group, establishing at a clicking position, recording coordinates of positioning points and coordinates in the project by the ISP according to a digital delivery standard, and filling the coordinates into corresponding attributes so as to facilitate positioning in the delivery process of the project file;
step 202: creating two-dimensional path points, automatically adjusting the directions of the selected path points, wherein the path points of the overhead line are more, a plurality of lines possibly appear in the same project, checking whether the connection sequence of the towers is consistent with the expected sequence by using an auxiliary path generating function after the path points are selected, and confirming the connection sequence;
Step 203: generating a steel pipe rod single line group consisting of a steel pipe rod single line and a steel pipe rod cross arm single line according to the two-dimensional path points, further generating a steel pipe rod model according to the steel pipe rod single line, reading the dimensional parameters of the model from the steel pipe rod single line, and generating a steel pipe rod insulator based on the steel pipe rod model;
Step 204: generating an iron tower single line group according to the two-dimensional path points, creating and placing a wire hanging plate according to the iron tower single line, inheriting the path code and number information of the iron tower single line group by the wire hanging plate, creating an iron tower insulator according to a wire hanging plate standard family, and further creating an iron tower model based on the iron tower single line group;
Step 205: and recording information of wire hanging points on the steel pipe pole insulator and the iron tower insulator, judging the split number of the wires according to the number of the wire hanging points, creating a ground wire, operating the ground wire in accordance with the created wires, and further carrying out lofting according to the wires to generate a model to finish modeling of the overhead line.
Compared with the prior art, the invention has the following advantages:
The invention focuses on the connection relation among the components in the IFC data format, expresses the components in a three-dimensional parametric modeling mode, can accurately express the design of the overhead line, and carries out the rapid construction of the overhead line through the connection relation among the components; the method is characterized in that a Revit platform is used as a basic graphic platform, and the rapid construction software of the overhead line is completed by creating a standardized family library and carrying out secondary development on the platform, so that the rapid construction software is used for assisting in the design of the overhead line, and the design result can be visualized rapidly in the design process of the overhead line; meanwhile, the tower and the insulator record real and accurate design data while generating, can intuitively help designers verify in three dimensions, and simultaneously provides a data base for subsequent electrical calculation and analysis and automatic drawing generation.
Drawings
Fig. 1 is a flow chart of overhead line construction.
Fig. 2 is a single line sketch of a steel pipe shaft.
Fig. 3 is a single line sketch of a steel pipe pole cross arm.
Fig. 4 is a graph showing the effect of duplicating the steel pipe pole.
Fig. 5 is an effect diagram of adding a hanger plate.
Fig. 6 is a view showing the effect of the steel pipe pole model.
Fig. 7 is a single line group effect diagram of the iron tower.
Fig. 8 is a functional interface and effects diagram for creating a hanger plate.
Fig. 9 is an effect diagram of automatically placing the iron tower hanging wire plate.
Fig. 10 is an effect diagram of the iron tower model.
Fig. 11 is a diagram of creating a wire effect.
Detailed Description
The invention will now be described in detail with reference to the drawings and specific examples. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
Examples
As shown in the figure, the invention discloses a three-dimensional digital expression method of overhead line components based on an IFC data format, aiming at the requirement of the parameterized design of the overhead line, the invention defines a new expression form for main components (a pole, a tower, an insulator, hardware fittings and overhead lines) of the overhead line based on the IFC data format, and adds the combination and connection relation in the IFC format when the attributes of the components in the electrical professional field are reserved.
The method comprises the steps of firstly introducing a tower locating point for locating a tower in a tower arrangement design, recording coordinates, directions, elevations, burial depths, line codes and numbers of the tower by the tower locating point, defining specific positions of the tower by the coordinates, the directions, the elevations and the burial depths, defining a sequence of connection between the towers by the line codes and the numbers, and inheriting attributes of the line codes and the numbers by all components generated by referring to the tower so as to facilitate inquiry and sequencing of the components.
The invention adopts the flow of the tower locating point, the tower single line, the tower, the insulator and the overhead line to construct the overhead line, and then calculates and modifies local details after the whole construction, wherein the tower locating point and the tower single line are the core of the whole process, the steel pipe single line and the iron tower single line are generated according to the position and the orientation of the tower locating point, and all components based on the tower are generated based on the tower single line, so that the information of the tower can be expressed rapidly and intuitively, and the smoothness of the whole design process under the three-dimensional view is ensured.
The steel pipe pole comprises steel pipe pole single line group, pole body, cross arm, flange and appurtenant component, and steel pipe pole single line group is a set of line that has different line types and combination relation, represents the position of pole body, cross arm, flange, and the line type represents the type of component, the connection relation between line and the line represents the connection relation between the component parts of steel pipe pole, and appurtenant component of steel pipe pole is placed and is connected with steel pipe pole through steel pipe pole single line group based on steel pipe pole single line group, and the link plate is equipped with the link hole, and the steel pipe pole forms the relation of connection with the insulator through the multilayer combination relation between cross arm, link plate, the link hole.
The iron tower type is angle steel tower or steel pipe tower, and the iron tower comprises iron tower single line group, member, link plate and accessory component, and the iron tower single line group is a set of line that has different lineal, represents the position of member, and the attribute such as the size of its linear record iron tower member, type between line and the line represents the relation of connection between the iron tower member, and the link plate of iron tower is placed with accessory component based on iron tower single line group, through being connected with the iron tower single line group, and the steel pipe pole is the same, and the iron tower passes through the link hole on the link plate and is connected with the insulator.
Besides the outline dimension information and the electrical property of the insulator, the insulator is also provided with hanging points and hanging line points, and according to different types of insulators, the number of the hanging points and the number of the hanging line points are different, and the hanging line points of the insulator and the overhead line form a connection relation.
The hardware is placed with reference to different defined components according to the installation position and the function of the hardware.
The overhead line comprises a positioning line and an overhead line, two sections of the positioning line are hanging line points, the two sections of the positioning line are connected with the hanging line points on the insulator one to one, the positioning line is calculated by referring to a catenary formula from the positions of the two sections of hanging line points, and the overhead line is generated based on the positions of the positioning line and attribute information on the positioning line.
The invention adopts the Revit as a basic graph drawing platform, and completes the quick construction software of the overhead line comprising a standard design module, a channel path module, a steel pipe pole module, an iron tower module and a wire guide module through secondary development of the Revit platform, thereby being used for assisting in line design.
The functions of the standard design module comprise loading template families, creating ISPs, updating ISPs and global variables, loading required template families before the design starts, automatically creating engineering information agent models required in the delivery standard and filling in information, and the functions of the standard design module specifically operate as follows:
loading a template family: the function is a general function of line design, and according to different professions, the function is to identify and automatically load different template family libraries, wherein the template family comprises auxiliary template families which are necessary for the current professional auxiliary design functions such as the tower locating points (named as two-dimensional path points in actual cases) and line hanging points and the like;
Creating an ISP: the method comprises the steps that firstly, whether an ISP group is created is identified in a current project file, the uniqueness of the ISP group is checked, and if the ISP group is not created in the current file, the ISP group is automatically created at a clicking position;
Updating ISP: according to the digital delivery standard, the ISP records the GPS coordinates of the locating points and the coordinates in the project, and the updated ISP automatically fills the coordinate values of the locating points in the project into the corresponding attributes, so that the locating in the delivery process of the project file is facilitated;
global variable: and checking the ISP uniqueness in the project file, and popping up a dialog box, and writing the information into the corresponding ISP attribute after the user manually inputs the project name and number.
The channel path design module has the functions of creating path points, rotating path points, carrying out label batch processing, generating auxiliary paths and closing the auxiliary paths, and is used for designing the channel paths, and the specific operation is as follows:
Creating a path point: in the overhead line, the types of two-dimensional path points are three types of a pole, a tower and a pole climbing, each path point has the properties of a path code number, a number, an elevation and a buried depth and is used for positioning and sequencing the pole and the tower, the function supports cyclic point selection, each point selection records the type, the path code number, the elevation and the buried depth of the last path point and keeps unchanged, the number automatically advances by 1, and the position of any path point can be modified at any time in the actual operation process;
Rotation path point: in the process of creating the path points, the specific number of the path points cannot be determined, and the directions of the path points cannot be adjusted in time during creation, so that a rotating path point function is developed, the directions of the selected path points are automatically adjusted (the directions of the angular bisectors of the front and rear path points are adjusted by default), part of the path points under the same path code can be selected for automatic rotation, all the path points under the designated path code can be selected for operation, and part of non-angular bisectors adopt a Revit original rotation command;
numbering batch processing: the numbering batch processing function is generally used for increasing or decreasing the pole tower when the overhead line design is changed, or the numbering is disordered caused by negligence in the design process, and numerical values are input after two-dimensional path points needing to be operated are selected in a frame mode (if negative values need to be input by decreasing the numbers), so that the numbers can be increased or decreased in batches;
Generating an auxiliary path: when the number of the path points of the overhead line is more and a plurality of lines appear in the same project, the function of generating an auxiliary path is used after the two-dimensional path points are selected, whether the connection sequence of the towers is consistent with the expected sequence is checked, and the function automatically generates a red dotted line as an auxiliary path according to the principle that the number of the same path is from small to large;
closing the auxiliary path: after confirming the connection order, all the auxiliary path lines are deleted.
The functions of the steel pipe pole design module comprise the steps of generating a single-line group of the steel pipe pole, copying the steel pipe pole, adding a wire hanging plate, establishing a steel pipe pole model, generating a steel pipe pole insulator and copying a layout on the pole, wherein the steel pipe pole model is established, and the functions of the steel pipe pole design module are specifically operated as follows;
Generating a single-wire group of the steel pipe rod: the method comprises the steps that a steel pipe rod single line is generated based on a two-dimensional path point with a type of a rod, the steel pipe rod single line is generated in a parameterization drawing mode, the steel pipe rod single line consists of a rod body single line and a cross arm single line, the rod body is determined by total height, upper diameter, lower diameter, number of sections and section length, four functions of preview, automatic section, section adding and section deleting are provided in an interface of rod body setting, the automatic section, section adding and section deleting are used for setting the number of sections and the length of the rod body, and a steel pipe rod single line sketch is created in a project file based on the selected two-dimensional path point according to the existing rod body parameters, and the preview function is shown in fig. 2; the cross arm is determined by the left side length, the breaking position, the right side length, the breaking position and the elevation, five functions of automatic setting, adding the cross arm, deleting the cross arm, rotating the cross arm and previewing are arranged on a cross arm setting interface, the positions, parameters and the number of the cross arms are set by automatic setting (automatic adding of four cross arms), adding of the cross arm, deleting of the cross arm and rotating of the cross arm, and the previewing function creates a single-line sketch of the steel pipe pole cross arm based on the selected two-dimensional path points in a project file according to the existing cross arm parameters, as shown in fig. 3. After the setting of the rod body and the cross arm is completed, clicking for confirmation, so that a single-line group of the steel pipe rod can be generated for the generation of a subsequent steel pipe rod model;
Duplicating the steel pipe pole: when the same rod type in the overhead line is repeatedly used, the function of copying the steel pipe rod can be used, when the steel pipe rod is copied, a path point corresponding to the copied steel pipe rod single-line group is selected in a plan view, then the path point required to be operated is selected in a framing mode, copying can be completed, all parameters of the copied steel pipe rod single-line group are consistent with those of the original single-line group, but the path code numbers are consistent with the path points corresponding to the path code numbers, and the effect is shown in figure 4;
Adding a wire hanging plate: the function of adding the wire hanging plate is used for the condition that a plurality of wire hanging plates appear on the same cross arm, and the symbol representing the wire hanging plate can be generated by selecting points on a single wire of the cross arm, and the effect is shown in figure 5;
Steel pipe pole model: as shown in fig. 6, the steel pipe pole model is generated based on the steel pipe pole single line, the dimension parameters of the model are automatically read from the steel pipe pole single line, the design parameters of the steel pipe pole (hanging pole/tension pole, design number, tower type) are input, the interface type of the steel pipe pole body is selected (circular interface, polygonal section and edge number), and after clicking confirmation, the program automatically generates the steel pipe pole model according to the input parameters and the steel pipe pole single line group;
Steel pipe pole insulator: the steel tube pole insulator is generated based on the steel tube pole model, after a voltage level is selected, a standardized family library corresponding to the voltage level is automatically read, file names of all families are displayed, a required type is selected, a loop, a phase and left/right hanging wires (used for automatic generation of overhead wires) are input, after creation is clicked, the steel tube pole model is selected, creation of the insulator can be completed after a hanging wire point is clicked, the steel tube pole model is loaded with a standardized cross arm family in the generation process, the position of each hanging wire point on the steel tube pole is automatically calculated according to the position of a cross arm hanging wire plate and the cross arm family, and the positions are displayed when a cross arm is created, so that the selective operation of a user is facilitated.
Copy bar upper layout: in a conventional overhead line, the phase sequence is consistent with the arrangement of loops on a tower, so that for simplifying the operation, the insulators are arranged in batches on different steel pipe poles in a layout mode by using a function of copying the layout on the pole, wherein the function requires that the number of the hanging wire points of the selected steel pipe poles is consistent, and the layout on the copying pole and the layout on the copying tower adopt the same sorting algorithm for three-dimensional points.
The iron tower design module comprises an iron tower single-wire model creation module, an automatic wire hanging plate placement module, an insulator creation module, a tower layout copying module and an iron tower model creation module, and is used for creating the iron tower model and specifically comprises the following steps of.
Creating a single-line model of the iron tower: as shown in fig. 7, the single line group of the iron tower is generated based on two-dimensional path points with the type of 'tower', the single line group of the iron tower is generated by adopting a mode of importing the existing single line files of the iron tower, each single line file of the iron tower is generated by analyzing SmartTower structural calculation result files of design software of the iron tower, three files of dat, IA0 and NODE in the result calculation files are extracted, the tower type, calling height and total height of the iron tower, NODE coordinates, connection information of rod pieces and size and shape information of the rod pieces are stored in a line group library, the generated files are used for generating the single line of the iron tower, the tower type and calling height are selected, each line in the single line group of the iron tower can be created after a design number is input, the size information of the rod piece and the path code number and the number of the iron tower are recorded on line;
Creating a hanging wire board: the iron tower structure calculation file does not contain the information of the hanging wire plates, so that the iron tower structure calculation file needs to be created according to the iron tower single wire, the corresponding hanging wire plate type and the rod single wire where the hanging wire plates are positioned are selected to finish the creation, the created hanging wire plates inherit the path code and number information of the iron tower single wire group, and the functional interface and the creation effect are shown in figure 8;
automatic place string hanging board: the positions of the conventional iron tower for placing the wire hanging plates are regular, the wire hanging plates are automatically placed, the rod piece single wires where the wire hanging plates above the call height are located are identified by reading the call height and the call direction of the iron tower single wire group, the types of the wire hanging plates (the hanging wire hanging plates and the tension-resistant wire hanging plates) for placing the wire hanging plates are determined according to the direction of the rod piece single wires, and the created wire hanging plates inherit the path code and the number information of the iron tower single wire group, so that the effect is shown in figure 9;
Duplicating the layout on the tower: copying tower-mounted insulator layout can be completed as long as the number of the wire hanging plates is the same, and the path code numbers and the numbers of the copied insulators automatically correspond to the corresponding iron tower single wire groups, and the orientations of the copied insulators are adjusted according to the orientations of the iron tower single wire groups;
Creating an iron tower model: the iron tower model is created based on the iron tower single-line group, the rod pieces with corresponding sizes are automatically created according to the size information of the rod pieces, the direction is automatically adjusted according to the relation between the main material part of the iron tower and the center position of the iron tower, the number of the rod pieces of the iron tower is large, the generated iron tower model is large, the clamping is easy to cause, and therefore the iron tower model is created finally, and the creation effect is shown in fig. 10.
The functions of the wire design module include checking and modifying loop phase sequence, creating wires, creating ground wires and wire modeling for creating an overhead line model, and the functions of the wire design module specifically operate as follows:
checking and modifying the loop phase sequence: the function of modifying the phase sequence of the loop is mainly used for misoperation of the phase sequence of the loop of the insulator, checking the loop, the phase sequence and left/right line hanging information of the currently selected insulator and modifying the information;
creating a wire: the wire is created based on an insulator, information of wire hanging points is recorded on the insulator, the splitting number of the wire is judged according to the number of the wire hanging points, in the process of creating the wire, the direction of the insulator automatically rotates according to the positions of the front tower and the rear tower, and the creation effect is shown in fig. 11;
Creating a ground wire: creating the ground wire is the same as creating the lead wire;
Modeling a wire: and (5) lofting according to the lead to generate a model.
While the invention has been described with reference to certain preferred embodiments, it will be understood by those skilled in the art that various changes and substitutions may be made without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the invention is subject to the protection scope of the claims.
Claims (8)
1. An overhead line component three-dimensional digital expression method based on an IFC data format is characterized by comprising the following steps:
Step 1: establishing a connection relationship between overhead line components based on an IFC data format according to the requirements of overhead line parameterization design;
step 2: according to the connection relation between overhead line components, three-dimensional parametric modeling is carried out through overhead line rapid building software, and an overhead line is built;
Step 3: after the whole construction, calculating and modifying local details to finish three-dimensional digital expression of the overhead line component;
In the step 2, the overhead line rapid construction software comprises a standard design module, a channel path module, a steel pipe pole module, an iron tower module and a wire guide module;
in the step 2, the fast construction process of the overhead line specifically comprises the following steps:
Step 201: loading a required template group, carrying out uniqueness test on a current project file to determine whether the current project file contains the created ISP group, if the current project file does not have the created ISP group, creating at a clicking position, recording coordinates of positioning points and coordinates in the project by the ISP according to a digital delivery standard, and filling the coordinates into corresponding attributes so as to facilitate positioning in the delivery process of the project file;
Step 202: creating two-dimensional path points, automatically adjusting the direction of the selected path points, checking whether the connection sequence of the towers is consistent with the expected sequence by using an auxiliary path generating function after the selected path points are clicked, and confirming the connection sequence;
Step 203: generating a steel pipe rod single line group consisting of a steel pipe rod single line and a steel pipe rod cross arm single line according to the two-dimensional path points, further generating a steel pipe rod model according to the steel pipe rod single line, reading the dimensional parameters of the model from the steel pipe rod single line, and generating a steel pipe rod insulator based on the steel pipe rod model;
Step 204: generating an iron tower single line group according to the two-dimensional path points, creating and placing a wire hanging plate according to the iron tower single line, inheriting the path code and number information of the iron tower single line group by the wire hanging plate, creating an iron tower insulator according to a wire hanging plate standard family, and further creating an iron tower model based on the iron tower single line group;
Step 205: and recording information of wire hanging points on the steel pipe pole insulator and the iron tower insulator, judging the split number of the wires according to the number of the wire hanging points, creating a ground wire, operating the ground wire in accordance with the created wires, and further carrying out lofting according to the wires to generate a model to finish modeling of the overhead line.
2. The three-dimensional digital expression method of overhead line components based on the IFC data format of claim 1, wherein in the step 1, the process of establishing the connection relationship between the components is specifically as follows:
Step 101: introducing a tower locating point for locating the tower in the tower arrangement design;
step 102: generating a single tower line according to the position and the orientation of a tower locating point;
step 103: and generating an overhead line component according to the single line of the pole tower.
3. The three-dimensional digital expression method of an overhead line component based on an IFC data format according to claim 2, wherein in the step 101, the information of the locating points of the towers includes position information of the towers and sequential connection sequence information between the towers, the position information includes coordinates, orientation, elevation and burial depth, and the sequential connection sequence information includes a line code number and a serial number.
4. The three-dimensional digital expression method of an overhead line component based on an IFC data format according to claim 3, wherein the overhead line component comprises a steel pipe pole, an iron tower, a hardware fitting, an insulator and an overhead line group, and the overhead line component has the attribute of line codes and numbers of corresponding pole tower single lines so as to facilitate inquiry and sequencing.
5. The three-dimensional digital expression method for the overhead line component based on the IFC data format of claim 4, wherein the steel pipe rod consists of a steel pipe rod single line group, a rod body, a cross arm, a flange and an accessory component, the steel pipe rod single line group is a group of lines with different line types and combination relations and represents the positions of the rod body, the cross arm and the flange, the accessory component is connected with the steel pipe rod through the steel pipe rod single line group, and the steel pipe rod is connected with an insulator through the multi-layer combination relations among the cross arm, the wire hanging plate and the wire hanging hole.
6. The three-dimensional digital expression method for the overhead line component based on the IFC data format according to claim 5, wherein the iron tower is composed of an iron tower single line group, a rod piece, a wire hanging plate and an accessory component, the iron tower single line group is a group of wires with different wire types representing the rod piece position, the wire hanging plate and the accessory component of the iron tower are connected with the iron tower through the iron tower single line group, and the wire hanging plate is provided with wire hanging holes and is connected with an insulator.
7. The three-dimensional digital expression method of an overhead line component based on an IFC data format according to claim 6, wherein the insulator is provided with hanging points and hanging line points, the hanging points are correspondingly connected with the hanging line points on the tower, and the hardware fitting is placed according to the installation position and the function of the hardware fitting and with reference to different components.
8. The three-dimensional digital expression method of the overhead line component based on the IFC data format of claim 7, wherein the overhead line group consists of a positioning line and an overhead line, two ends of the positioning line are provided with hanging wire points which are correspondingly connected with hanging wire points of an insulator, the positioning line is calculated according to a catenary formula according to the positions of the hanging wire points, and the overhead line is obtained according to the positions and attribute information of the positioning line.
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| CN112183017A (en) * | 2020-10-28 | 2021-01-05 | 国网上海电力设计有限公司 | Overhead line three-dimensional parameterization display system based on IFC data format |
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